Phosphorus Indexes: A Comparison of PI Results with the USDA-ARS Aple Model.
Brad C. Joern, Dept of Agronomy Lilly Hall, Purdue University, West Lafayette, IN, Philip Hess, Agronomy, Purdue University, West Lafayette, IN, Bradley Eisenhauer, Purdue University, West Lafayette, IN and Peter A. Vadas, USDA-ARS, Madison, WI